rev to 2.1.3 in preparation for release (#75)

* rev to 2.1.3 in preparation for release

* Update CHANGELOG.md

Co-authored-by: Kevin Moore <kevmoo@users.noreply.github.com>

Co-authored-by: Kevin Moore <kevmoo@users.noreply.github.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e23ce10..8c394e3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
-# 2.1.3-dev
+# 2.1.3
 
+- Add type parameters to the signatures of the `Version.preRelease` and
+  `Version.build` fields (`List` ==> `List<Object>`).
+  [#74](https://github.com/dart-lang/pub_semver/pull/74).
 - Require Dart 2.17.
 
 # 2.1.2
diff --git a/pubspec.yaml b/pubspec.yaml
index bac8775..e7906a7 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: pub_semver
-version: 2.1.3-dev
+version: 2.1.3
 description: >-
  Versions and version constraints implementing pub's versioning policy. This
  is very similar to vanilla semver, with a few corner cases.